商城：增加商城首页

src/views/mall/home/components/ComparisonCard.vue

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+<template>
+  <div class="flex flex-col gap-2 bg-[var(--el-bg-color-overlay)] p-6">
+    <div class="flex items-center justify-between text-gray-500">
+      <span>{{ title }}</span>
+      <el-tag>{{ tag }}</el-tag>
+    </div>
+    <div class="flex flex-row items-baseline justify-between">
+      <CountTo :prefix="prefix" :end-val="value" :decimals="decimals" class="text-3xl" />
+      <span :class="toNumber(percent) > 0 ? 'text-red-500' : 'text-green-500'">
+        {{ Math.abs(toNumber(percent)) }}%
+        <Icon :icon="toNumber(percent) > 0 ? 'ep:caret-top' : 'ep:caret-bottom'" class="!text-sm" />
+      </span>
+    </div>
+    <el-divider class="mb-1! mt-2!" />
+    <div class="flex flex-row items-center justify-between text-sm">
+      <span class="text-gray-500">昨日数据</span>
+      <span>{{ prefix || '' }}{{ reference }}</span>
+    </div>
+  </div>
+</template>
+<script lang="ts" setup>
+import { propTypes } from '@/utils/propTypes'
+import { toNumber } from 'lodash-es'
+import { calculateRelativeRate } from '@/utils'
+
+/** 交易对照卡片 */
+defineOptions({ name: 'ComparisonCard' })
+
+const props = defineProps({
+  title: propTypes.string.def('').isRequired,
+  tag: propTypes.string.def(''),
+  prefix: propTypes.string.def(''),
+  value: propTypes.number.def(0).isRequired,
+  reference: propTypes.number.def(0).isRequired,
+  decimals: propTypes.number.def(0)
+})
+
+// 计算环比
+const percent = computed(() =>
+  calculateRelativeRate(props.value as number, props.reference as number)
+)
+</script>